RFR: 8274903: Zero: Support AsyncGetCallTrace [v3]

[Aleksey Shipilev]

On Wed, 10 Nov 2021 18:03:00 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   More reviews
>
> Marked as reviewed by sspitsyn (Reviewer).

> Thank you, @sspitsyn! Any more reviews, anyone?

No other reviews? I'd like to integrate this soon.

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PR: https://git.openjdk.java.net/jdk/pull/5848